I am a type 1 diabetic and my doctor, Richard K. Bernstein, is also a diabetic. He recommended this product to me because illnesses wreak havoc with blood sugars. As soon as I feel a sore throat coming on or other symptoms and my blood sugars are going up, I take two of these tablets three times a day for two days. That schedule has worked every time for me; the symptoms and high blood sugars are usually gone before the sixth dose is taken. The only time it doesn't work is if I'm already full-on sick. Then it's a waste of money to take the tablets. I LOVE these things because I don't love high blood sugar! They're just one more thing that helped me reverse the nonproliferative retinopathy I developed three years ago, before Dr. Bernstein was my doctor.